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Journal : JURNAL TEKNOLOGI LINGKUNGAN

 1 
Peningkatan Kualitas Air Baku dari Sungai Surabaya dengan Proses Biofiltrasi Said, Nusa Idaman; Widayat, Wahyu; Nugroho, Rudi
Jurnal Teknologi Lingkungan Vol. 21 No. 1 (2020)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (633.337 KB) | DOI: 10.29122/jtl.v21i1.3284

Abstract

ABSTRACTSurabaya River is a source of raw water for the needs of the community in Surabaya and its surrounding areas, including for industrial and the Surabaya water supply company. Along with the rapid growth of settlements and the development of the industrial sector, the Surabaya River pollution level has increased so that the quality of the water does not meet the quality standards required as raw water for drinking water. The most potential parameter that causes the level of pollution is organic pollutants. The concentration of some water quality parameters including organic pollutants in the Surabaya River has exceeded class I water quality standards based on Government Regulation (PP) No. 82 of 2001, namely for allotment of raw water for drinking water. The purpose of this study was to improve the raw water quality such as parameters of suspended solids (TSS), organic substances, detergents and manganese (Mn) through the application of biofilter technology. The study was conducted by operating a biofilter pilot plant consisting of a lamella-type settling tank and a biofilter reactor filled with wasp-type nesting media. The results showed that the biofilter process used can reduce the concentration of TSS, organic matter, detergents and Mn in raw water. In general, the longer the hydraulic residence time (HRT) in the biofilter pilot plant, the greater the efficiency of removing TSS, organic matter, and detergent in raw water. The experiments results at the conditions of the shortest total HRT of 81 minutes, including HRT of 36 minutes in the settling tank and HRT of 45 minutes in the biofilter reactor, could obtain TSS removal efficiency of 46.92%, 15.97% for organic matter, and 55% for detergent, where the concentration of these parameters meets the quality standards for drinking water.Keywords: biofiltration, HRT, drinking water, water qualityABSTRAKSungai Surabaya merupakan sumber air baku untuk kebutuhan masyarakat di wilayah Surabaya dan sekitarnya, termasuk untuk kebutuhan industri dan air baku PDAM kota Surabaya. Seiring pesatnya pertumbuhan pemukiman dan perkembangan sektor industri, mengakibatkan tingkat pencemaran Sungai Surabaya semakin tinggi sehingga kualitas airnya tidak memenuhi ketentuan baku mutu yang dipersyaratkan sebagai air baku air minum. Parameter yang paling potensial menyebabkan tingkat pencemaran tersebut adalah polutan organik. Konsentrasi beberapa parameter kualitas air termasuk polutan organik di sungai Surabaya telah melebihi baku mutu air kelas I berdasarkan Peraturan Pemerintah (PP) No 82 tahun 2001, yakni untuk peruntukan air baku air minum. Tujuan dari penelitian ini adalah untuk melakukan peningkatan kualitas air baku seperti parameter padatan tersuspensi (TSS), zat organik, deterjen dan mangan (Mn) melalui penerapan teknologi biofilter. Penelitian dilakukan dengan mengoperasikan pilot plant biofilter yang terdiri dari bak pengendap tipe lamella dan reaktor biofilter yang diisi dengan media plastik tipe sarang tawon. Hasil penelitian menujukkan bahwa proses biofilter yang digunakan dapat menurunkan konsentrasi TSS, zat organik, deterjen dan Mn di dalam air baku. Secara umum semakin lama waktu tinggal di dalam pilot plant biofilter, efisiensi penghilangan TSS, zat organik, dan deterjen di dalam air baku semakin besar. Hasil percobaan pada kondisi total waktu tinggal terpendek (total HRT) 81 menit, meliputi HRT di bak pengendap 36 menit dan HRT di reaktor biofilter 45 menit, didapatkan efisensi penghilangan TSS 46,92 %, zat organik 15,97 %, dan deterjen 55 %, dimana konsentrasi parameter-parameter tersebut memenuhi baku mutu untuk air minum.Kata kunci: biofiltrasi, HRT, air minum, kualitas air
Kualitas Air Danau Toba di Wilayah Kabupaten Toba Samosir dan Kelayakan Peruntukannya Garno, Yudhi Soetrisno; Nugroho, Rudi; Hanif, Muhammad
Jurnal Teknologi Lingkungan Vol. 21 No. 1 (2020)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (207.074 KB) | DOI: 10.29122/jtl.v21i1.3277

Abstract

ABSTRACTThis research was conducted to determine the status of Lake Toba water quality in the area of Toba Samosir (Tobasa) Regency and the feasibility of its use. This study revealed that BOD, COD, iron and free Cl2 of Lake Toba Tobasa regency exceed water quality criteria for Class I and Class II based on Governor Decree No. 1 Year 2009 on Raw water quality of Lake Toba in North Sumatera. High COD and BOD values imply that Lake Toba water was polluted by organic matter presumably originated from floating net cages (KJA), while free Cl2 is thought to originate from domestic waste activities in Parapat City and its surroundings. In general, it was concluded that the water of Lake Toba in the Tobasa Regency did not meet the criteria for clean water and water tourism.Keywords: Lake Toba, raw water, pollution, water qualityABSTRAKPenelitian ini dilakukan untuk mengetahui kualitas air Danau Toba wilayah Kabupaten Toba Samosir (Tobasa) dan kelayakan peruntukannya. Penelitian ini mengungkapkan bahwa air Danau Toba wilayah Kabupaten Tobasa memiliki BOD, COD dan konsentrasi besi dan Cl2 bebas melebihi kriteria mutu air Kelas I dan Kelas II pada Peraturan Gubernur Sumatra Utara No 1 Tahun 2009. Tingginya nilai COD dan BOD mengisyaratkan bahwa perairan Danau Toba tercemar oleh bahan organik yang diduga berasal keramba jaring apung (KJA), sedangkan Cl2 bebas diduga berasal dari limbah domestik kegiatan Kota Parapat dan sekitarnya. Secara umum disimpulkan bahwa air Danau Toba di wilayah Kabupaten Tobasa tidak/belum memenuhi kriteria untuk air baku air minum  dan wisata air.Kata kunci: danau Toba, bahan baku air, pencemaran, baku mutu
Efektivitas Pengolahan Air yang Mengandung Amonia Konsentrasi Tinggi Menggunakan Konsorsium Probiotik Komersial dan Bakteri Sedimen Kolam Lele Ambarsari, Hanies; Syah, Iman; Nugroho, Rudi; Manurung, Brian Saputra; Suciati, Fuzi
Jurnal Teknologi Lingkungan Vol. 21 No. 1 (2020)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1065.099 KB) | DOI: 10.29122/jtl.v21i1.3478

Abstract

ABSTRACTNitrification is one of the most widely used methods to reduce ammonia concentration in wastewater.The purpose of this study was to determine the effectiveness of high-concentrated ammonia nitrification by the consortium between commercial probiotics and bacteria from the sediment of the catfish pond. The study was conducted on batch system bioreactors with a working volume of 1 liter containing 100 mg/L ammonia solution and 50 grams sediment of catfish pond. This study used a treatment variation of the concentration of commercial probiotics and the bacterial isolate from the catfish pond sediment using glucose as the carbon source. The variations of commercial probiotics added to the bioreactor were 5 ml/L, 10 ml/L and 15 ml/L. The variations of glucose concentration were 0 g/L and 3,9 g/L. Analysis of ammonia concentration was carried out by spectrophotometry using the phenate method. The highest removal efficiency of ammonia was 92.35% in the bioreactor with a mixture of 15 ml/L commercial probiotics and 3.9 g/L glucose with the fastest ammonia rate was on the third day of the experimental period. The addition of glucose in the bioreactors could increase ammonia removal by 57.39%. The result of statistical analysis indicated that variations in the concentration of commercial probiotic indicated no statistically significant difference in ammonia removal (P> 0.05), while variations in glucose concentration showed a statistically significant difference in ammonia removal (P <0.05). Three isolates were successfully isolated on specific media for nitrifying bacteria. The result of bacterial identification showed that three isolated bacteria were Bacillus sp., Aeromonas salmonicida, and Burkholderia cepacia.Keywords: ammonia, nitrification, sediment of catfish pond, commercial probioticABSTRAKNitrifikasi merupakan salah satu metode yang paling banyak digunakan untuk mengurangi konsentrasi amonia pada limbah cair. Penelitian ini bertujuan untuk mengetahui efektivitas penambahan sedimen kolam lele dan probiotik komersial dalam nitrifikasi amonia konsentrasi tinggi. Penelitian menggunakan bioreaktor sistem batch dengan volume kerja 1 liter yang berisi larutan amonia 100 mg/L dan 50 gram sedimen kolam lele. Perlakuan pada penelitian ini terdiri dari pemberian variasi konsentrasi probiotik komersial dan sedimen kolam lele dengan sumber karbon glukosa. Variasi probiotik komersial yang ditambahkan pada bioreaktor adalah 5 ml/L, 10 ml/L dan 15 ml/L sedangkan variasi konsentrasi glukosa adalah 0 g/L dan 3,9 g/L. Analisis konsentrasi amonia dilakukan secara spektrofotometri menggunakan Metode Fenat. Hasil penurunan rata-rata amonia tertinggi adalah sebesar 92,35% pada bioreaktor dengan campuran probiotik komersial 15 ml/L dan glukosa 3,9 g/L dengan laju penurunan ammonia tercepat pada hari ke-3 periode eksperimen. Penambahan glukosa pada bioreaktor mampu meningkatkan penurunan amonia sebesar 57,39%. Analisis statistik menunjukkan bahwa variasi konsentrasi probiotik komersial tidak menunjukkan perbedaan signifikan pada penurunan amonia (p>0,05) sedangkan variasi konsentrasi glukosa menunjukkan perbedaan yang signifikan terhadap penurunan amonia (p<0,05). Tiga isolat berhasil diisolasi menggunakan media spesifik bakteri nitrifikasi. Hasil identifikasi dari tiga bakteri menunjukkan bahwa isolat tersebut adalah Bacillus sp., Aeromonas salmonicida dan Burkholderia cepacia.Kata kunci: amonia, nitrifikasi, sedimen kolam lele, probiotik komersial
PEMANFAATAN MIKROBA AUTOTROPH DALAM PENGOLAHAN LIMBAH NITRAT KONSENTRASI TINGGI Nugroho, Rudi
Jurnal Teknologi Lingkungan Vol. 4 No. 3 (2003): JURNAL TEKNOLOGI LINGKUNGAN
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (441.148 KB) | DOI: 10.29122/jtl.v4i3.281

Abstract

The treatment of wastewater containing high concentration of nitrate and lowconcentration of BOD using autotrophic bacteria were conducted in batchsuspension experiment to investigate nitrate concentration level which can betreated by the bacteria. The autotrophic bacteria were enriched by acclimatingactivated sludge with inorganic substrates. The experimental result shows thatdenitrification reaction with initial nitrate concentration in synthetic wastewater from 200 to 850 mg/l proceeded according to the one-order reaction. The denitrification rate increased with increasing the initial nitrate concentration. Sulfate was detected as the by product of the denitrification reaction. The sulfate produced for 1 mmol of nitrate decreased was 1.09 mmol.
Uji Kinerja Instalasi Daur Ulang Air Limbah Industri Kaleng di Jakarta Yudo, Satmoko; Nugroho, Rudi
Jurnal Teknologi Lingkungan Vol. 20 No. 2 (2019)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (650.368 KB) | DOI: 10.29122/jtl.v20i2.3413

Abstract

ABSTRACTThe need for clean water consumption continues to increase in line with the current population and industry growth. The canned industry is one of the industries that consume a considerable amount of water for the production process, while the availability of clean water sources is very limited, both in quantity and quality. One alternative solution to the problem above is by building a wastewater treatment plant into reusable water (recycling) to meet the needs of the washing process in the industry. This paper discusses the testing of wastewater recycling installations into clean water in a canned industry in Jakarta. The process of recycling wastewater is divided into several stages, namely chemical processes for pH control, biological processes of activated sludge, biofilter, and filtration. Afterward, the wastewater is filtered using a reverse osmosis membrane. The test results show that the water quality of recycling wastewater and filtered wastewater using RO membranes could produce pure water quality. The use of water for the process in the canned industry is large enough for canned washing processes. Therefore, by using the recycling technology, the use of water, especially for the washing process, can be saved up to 100%.Keyword : wastewater reuse, reverse osmosis, can industriesABSTRAKKebutuhan akan konsumsi air bersih terus meningkat sejalan dengan pertumbuhan penduduk dan industri saat ini. Industri kaleng merupakan salah satu industri yang mengkomsumsi air dalam jumlah yang cukup banyak untuk proses produksi, sedangkan  ketersediaan sumber air bersih sangat terbatas, baik secara kuantitas maupun kualitas. Salah satu alternatif solusi permasalahan di atas yaitu dengan membangun instalasi pengolahan air limbah menjadi air yang dapat digunakan kembali (daur ulang) guna memenuhi kebutuhan proses pencucian di industrinya. Makalah ini membahas tentang pengujian instalasi daur ulang air limbah menjadi air bersih di salah satu industri kaleng di Jakarta. Proses pengolahan daur ulang air limbah terbagi dalam beberapa tahap yaitu proses pengolahan air limbah produksi dengan proses kimia untuk kontrol pH, proses biologis lumpur aktif dan biofilter serta filtrasi. Kemudian berikutnya dengan proses filtrasi menggunakan membran reverse osmosis. Hasil pengujian menunjukkan bahwa kualitas air pengolahan daur ulang air limbah dan penyaringan dengan menggunakan membran RO menghasilkan kualitas air yang murni. Pemakaian air untuk proses di industri kaleng yang cukup besar adalah untuk proses pencucian kaleng. Sehingga dengan adanya teknologi daur ulang, maka pemakaian air khususnya untuk proses pencucian dapat dihemat sampai 100%.Kata kunci : Daur ulang air limbah, reverse osmosis, industri kaleng
PERBAIKAN KUALITAS AIR BAKU PERUSAHAAN AIR MINUM (PAM) DENGAN BIOFILTRASI Nugroho, Rudi; Said, Nusa Idaman
Jurnal Teknologi Lingkungan Vol. 12 No. 2 (2011)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (340.92 KB) | DOI: 10.29122/jtl.v12i2.1244

Abstract

A study to improve the raw water quality at Taman Kota Drinking Water Company was conducted by using pilot plant of biofiltration system. The pilot plant was run by pumpingthe raw water from river to the reactor continuously with various Hydraulic Retention Time. Samples of raw water and treated water were taken daily and analyzed for pH,Total Suspended Solid (TSS), Organic matter, Ammonia nitrogen and Detergent (MBAS). The results showed that performance of biofiltration system decreaed due to shortening Hydraulic Retention Times (HRT). The longer HRT caused bigger volume of biofiltration tank. Therefore, this study suggests that the optimum Hydraulics retention time is 1 hr. In this HRT, the treated water quality were 7.2 for pH, 40 mg/l for TSS, 10,7 mg/l for organic matter, 0.35 mg/l for ammonia nitrogen and 0.1 mg/l for MBAS. These resultscomply with the Regulation No. 582 year 1995 for raw drinking water quality (class B).
KAJIAN KELAYAKAN EKONOMI RENCANA PEMBANGUNAN INSTALASI PENGOLAHAN AIR LIMBAH (IPAL) DOMESTIK KOMUNAL SISTEM UASB-DHS DI KOTA BOGOR Nugroho, Rudi; Rifai, Agus
Jurnal Teknologi Lingkungan Vol. 13 No. 3 (2012)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2348.49 KB) | DOI: 10.29122/jtl.v13i3.1396

Abstract

Air limbah rumah tangga merupakan salah satu potensi sumber pencemaran lingkungan . Berdasarkan Laporan JICA , 1995 pencemaran lingkungan di Jabodetabek adalah 80 % disebabkan oleh air limbah rumah tangga . Untuk meminimalkan pencemaran lingkungan, air limbah harus diperlakukan sebelum dibuang ke sungai . Masalah yang sering muncul dalam pengelolaan limbah domestik adalah luas lahan terbatas dan dana yang ada untuk membangun fasilitas pengolahan air limbah dan juga biaya operasional yang tinggi . Untuk mengatasi masalah tersebut, perlu pengembangan biaya rendah teknologi pengolahan air limbah dengan efisiensi penyisihan yang tinggi , mudah dioperasikan dan juga harus kompak . Sebuah teknologi kombinasi Upflow Anaerobic Sludge Blanket ( UASB ) dan aliran bawah Hanging Sponge ( DHS ) merupakan pengolahan air limbah ekonomi , mudah dioperasikan dan memiliki efisiensi penyisihan tinggi yaitu 98 % untuk BOD dan 99,8 % untuk bakteri . Namun, untuk membangun fasilitas pengolahan air limbah dengan menggunakan UASB dan teknologi DHS , perlu studi kelayakan . Makalah ini menjelaskan studi kelayakan ekonomi dan sosial dari penerapan teknologi pengolahan air limbah UASB dan DHS di Kota Bogor . Dengan perhitungan manfaat dan rasio biaya ( BCR ) , hasilnya menunjukkan bahwa BCR 2.13 . Ini berarti proyek pengolahan air limbah UASB dan DHS di Kota Bogor adalah layak. Kata kunci : air limbah rumah tangga , anaerobik selimut lumpur, studi sosial ekonom  AbstractDomestic wastewater is one of the potential sources of environment pollution. Based on the JICA Report, 1995 the environmental pollution in Jabodetabek was 80% caused by the domestic wastewater. To minimize the environmental pollution, the wastewater have to be treated before discharge to river. Problem which often emerge in management of domestic waste is the limited land area and existing fund to built a wastewater treatment facility and also the high operating cost. To overcome these problems, it needs development of low cost wastewater treatment technology with high removal efficiency, easy to operate and also should be compact. A combination technology of Upflow Anaerobic Sludge Blanket (UASB) and Downflow Hanging Sponge (DHS) represents an economic wastewater treatment, easy to operate and has high removal efficiency that is 98% for BOD and 99,8% for bacterium. However, to build the wastewater treatment facility by using the UASB and DHS technology, it needs a feasibility study. This paper explains an economic and social feasibility study of application the UASB and DHS wastewater treatment technology at Bogor City. By the calculation of benefit and cost ratio (BCR), the result shows that the BCR is 2.13. It means the UASB and DHS wastewater treatment project at Bogor City was feasible.
Studi Karakterisasi Sampah Landfill dan Potensi Pemanfaatannya (Studi Kasus di TPA Sukawinatan dan Bantargebang) Wahyono, Sri; Sahwan, Firman Laili; Suryanto, Feddy; Febriyanto, Irhan; Nugroho, Rudi; Hanif, Muhammad
Jurnal Teknologi Lingkungan Vol. 20 No. 2 (2019)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (554.738 KB) | DOI: 10.29122/jtl.v20i2.3335

Abstract

ABSTRACTLandfills contain materials that can be recovered to be recycled or used as an energy source. The purpose of this study is to conduct waste characterization that has long been buried in landfill which includes analysis of composition, proximate analysis, and ultimate analysis. Then the waste is analyzed for its use as recycled material and energy sources. The study was conducted at the Sukawinatan landfill (Palembang) and the Bantargebang landfill (Bekasi). Sampling was carried out on garbage that had been buried in landfills by digging at depths of up to 5 m using an excavator. Furthermore, the samples are dried in the sun, sifted with rotary screen, and sorted manually. Some samples were taken by quartering to be analyzed in the laboratory. The results of the research and analysis showed that (i) landfill waste was dominated by compost material (31-47%) and plastic combustible material (32-43%) and nonplastic combustible material (32-43%); (ii) shaped material such as compost has the potential as a substitute for landfill cover and as soil conditioner; (iii) potentially recycled materials such as plastic waste need intensive sorting and cleaning; (iv) landfills excavated waste can be potentially used as an energy source or refuse-derifed fuels (RDF) with a heating value between 7.31-15.61 MJ / kg; (v) landfills excavated waste has the potential to be used as fuel for incinerators; (vi) utilization of landfill waste for the cement industry still faces several obstacles such as high chlorine content and water content.Keywords: landfill, waste characterization, composition, proximate, ultimate ABSTRAKTPA mengandung material yang dapat diambil untuk didaur ulang atau dimanfaatkan sebagai sumber energi. Tujuan dari penelitian ini adalah untuk melakukan karakterisasi sampah yang telah lama tertimbun di TPA yang  meliputi analisis komposisi, analisis proksimat, dan analisis ultimat. Kemudian sampah tersebut dilakukan analisis pemanfaatannya sebagai bahan daur ulang dan sumber energi. Penelitian dilakukan di TPA Sukawinatan (Palembang) dan di TPA Bantargebang (Bekasi). Pengambilan sampel dilakukan terhadap sampah yang sudah tertimbun di landfill dengan cara menggali pada kedalaman hingga 5 m menggunakan excavator. Selanjutnya sampel dijemur, diayak dengan penyaring berputar (rotary screen), dan dipilah secara manual. Sebagian  sampel diambil dengan metode perempatan (quartering) untuk kemudian dianalisa di laboratorium. Hasil dari penelitian dan analisisnya memperlihatkan bahwa (i) sampah galian TPA didominasi oleh material kompos (31-47%) dan material combustible plastik (32-43%) serta combustible nonplastik (32-43%); (ii) material berbentuk seperti kompos memiliki potensi sebagai pengganti soil cover TPA dan sebagai material pembenah tanah (soil conditioner); (iii) material yang potensial didaur ulang seperti sampah plastik perlu pemilahan dan pembersihan yang intensif; (iv) sampah galian TPA potensial dimanfaatkan sebagai sumber energi atau RDF (refuse-derifed fuels) dengan nilai kalor antara 7,31-15,61 MJ/kg; (v) sampah galian TPA berpotensi digunakan sebagai bahan bakar insinerator PLTSa; (vi) pemanfaatan sampah galian TPA untuk industri semen masih menghadapi beberapa kendala seperti tingginya kandungan klorin dan kadar air.Kata kunci: landfill, karakterisasi sampah, komposisi, proksimat, ultimat
Teknologi Hidrotermal Sebagai Solusi Cepat Pengolahan Sampah Organik Menjadi Pupuk Dewanti, Dian Purwitasari; Wiharja, Wiharja; Hanif, Muhammad; Nugroho, Rudi
Jurnal Teknologi Lingkungan Vol. 21 No. 2 (2020)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (335.655 KB) | DOI: 10.29122/jtl.v21i2.3512

Abstract

ABSTRACT Hydrothermal technology is a promising new technology that can turn organic waste into value-added, eco-friendly, and sustainable products. In this research, the hydrothermal reactor's performance for treating the food wastes into solid and liquid fertilizer was investigated. Hydrothermal reactor with SS 316 steel material with a maximum capacity of 100 kg per batch is equipped with a cooling water jacket. Raw vegetable wastes and water with a ratio of 1:1 were added into a mixing container. The waste slurry was transferred through the pump into the reactor. The hydrothermal process is carried out at a pressure of 5 bar or a temperature of around 160 °C for 30 and 60 min. The results showed that the hydrothermal process treated the vegetable waste at 120 minutes at a temperature of 160 °C and 5 bar pressure. Solid products showed a higher C/N ratio and N + P2O5 + K2O content in the process of 30 minutes compared to 60 minutes, which were 12.42 and 5.36, respectively. In comparison, liquid products showed higher results in the 30-minute process than 60-minutes process with the amount of N + P2O5 + K2O and C-organic, respectively 2.23 and 0.31. This result indicated that the hydrothermal process is proven to be able to treat the organic waste into a relatively fast and eco-friendly compost. In the future, it is expected that the big-scale of hydrothermal processes can be an alternative technology in processing  wastes in Indonesia. Keywords: hydrothermal, fertilizer, municipal solid waste, vegetables wastes, eco-friendly technology ABSTRACT Teknologi hidrotermal adalah teknologi baru yang menjanjikan yang dapat mengubah sampah organik menjadi produk yang bermanfaat, ramah lingkungan dan berkelanjutan. Dalam riset ini, unjuk kinerja reaktor hidrotermal untuk mengolah sampah sisa sayuran menjadi pupuk padat dan cair diinvestigasi. Reaktor hidrotermal dengan material baja SS 316 berkapasitas 100 kg per batch dilengkapi dengan dinding air pendingin. Bahan baku sisa sayuran dimasukkan dalam tangki pencampur dengan ditambahkan air pada jumlah yang sama. Setelah berbentuk seperti bubur kasar, sampah dipindahkan melalu pompa ke dalam reaktor. Proses hidrotermal dilakukan pada tekanan 5 bar atau suhu sekitar 160 °C dengan waktu 30 dan 60 menit. Hasil pengujian menunjukkan bahwa proses hidrotermal dengan bahan baku sampah sisa sayuran memerlukan total waktu 120 menit pada temperatur 160 °C dan tekanan 5 bar. Produk padat menunjukkan rasio C/N dan kandungan N + P2O5 + K2O yang lebih tinggi pada proses yang berlangsung 30 menit dibandingkan dengan 60 menit yaitu 12,42 dan 5,36 berturut turut. Produk cair menunjukkan hasil yang lebih tinggi pada proses 30 menit dibandingkan 60 menit dengan jumlah N+P2O5+K2O dan C-organik masing-masing sebesar 2,23 dan 0,31. Hal ini mengindikasikan bahwa proses hidrotermal terbukti dapat mengolah sampah organik menjadi kompos dalam waktu yang relatif cepat dan ramah lingkungan. Kedepan, diharapkan proses hidrotermal pada skala komersial dapat menjadi teknologi alternatif dalam mengolah sampah di Indonesia. Kata kunci: hidrotermal, pupuk, sampah, sisa sayuran, teknologi ramah lingkungan
Co-Authors agus rifai Arie Herlambang Dewanti, Dian Purwitasari Febriyanto, Irhan Firman Laili Sahwan Fujita, Hiroyuki Garno, Yudhi Soetrisno Hanies Ambarsari Hardono, Joko Hidayat, Dian Friana Honda, Katsuhisa Ma'rufatin, Anies Mahmud, Ikbal Manurung, Brian Saputra Muhammad Hanif Nugraha, Yosep Widi Nurtya Sulasmi Nusa Idaman Said Robertus Haryoto Indriatmoko Satmoko Yudo Setiyono Setiyono Shoiful, Ahmad Sri Wahyono Suciati, Fuzi Suprihatin Suryanto, Feddy Syah, Iman wahyu widayat Wiharja Wiharja Wiwik Handayani